Description of the Questionnaire

This questionnaire is based on the Medical Research Council (MRC) Scale for measuring muscle strength. The scale is widely used in physiotherapeutic practice as an observational tool, allowing the assessment of muscle strength through a six-point scale ranging from 0 to 5. A score of 0 indicates a complete absence of muscle contraction, while a score of 5 reflects normal muscle function with the ability to perform movement against strong resistance. The tool is suitable for use in children, adults, and elderly individuals, and it primarily evaluates the function of the musculoskeletal system in the upper and lower limbs, as well as the spine. It is applied in conditions related to musculoskeletal and neurological disorders.

Data Analysis and Usage

Results are recorded separately for each muscle group and each side of the body. The score values, ranging from 0 to 5, are used to document the patient’s current functional status, assess progress over time, and support the evaluation of therapeutic interventions. The scale is ordinal in nature, and data interpretation is primarily qualitative. It enables comparisons across different time points or between different groups, contributing to clinical decision-making.

Objective

The objective of the questionnaire is the objective evaluation of muscle strength. It aims to identify functional limitations and support the development of targeted therapeutic strategies. At the same time, it allows the monitoring of rehabilitation progress in a variety of clinical conditions affecting mobility, including neurological, musculoskeletal, or mixed disorders.

Grading

The MRC scale consists of six grades. Grade 0 indicates no visible or palpable contraction. Grade 1 refers to a trace of contraction without visible movement. Grade 2 describes movement possible only with gravity eliminated. Grade 3 corresponds to movement against gravity. Grade 4 includes movement against moderate resistance. Finally, grade 5 is assigned when full-range movement is performed against strong resistance, indicating normal muscle strength.

References

Medical Research Council (1976). Dutch version: KNGF Guideline Osteoarthritis of Hip and Knee (2010). KNGF Guideline for Osteoarthritis of Hip and Knee, Royal Dutch Society for Physical Therapy (2010).